Separable fastener



- c. H. ELwELL SEPABABLE FASTENER Fild Jan. 24. -1924 Patented Dec. l6, 19.27.

@pogen Hmmfir ELWELIQOF CLEVELAND, oHIo, `Assefiyron `'ro' CARR FaspsnNERooM- i SEPARABLE FIXASIENER.-

'llhisilnvention ,aims t0 Provide an im? Preve@sepaeableiastener. L the drawings, Which Show A011e 111ustratre embodiment of my invention:

Ei en@ geen@ @n the Vl'iae e-s of n'Fig,`4 is afseetion on ,the line -fetof 2, Showing thespring in elevation;

g; 5r is an elevation'A of t-he'socket as viewed from the" attaching side; and K `Fig. 6` is an elevation of the attaching plate :1s-viewed troni-the rivet sidethereotf Referring Eto the drawings and to the .pre-

fei'red forin of Iny` invention,4 selectedv for l port i-by a ,serewf held -inthlestnd: This stud, exceptwforthe abrilptshoulderj 1s euh.y stantially like that `illustratedl anddescribed` vin `United StatesLetters Patent No51,433,`.

illustrative purposes, I have showna studi;

haiving a head ".lga neck 2y and arelatively abrupt shoulder portion Sfbetiveenthe head `*sufficiently so .that -it may become disengaged from' behind .the shoulder on theU studfand allow passage therethrough of the head ofand the neck. Thestlidis secured/toa sup? 7 83; issued Octoberi'l, 1922, to lGam' Fastener.

' '.Col'npany,Y assignee of lMoses Carr.v

The.' preferred for-inet socke'tfcomprises al cas-ihgihaving afback: face rr"and'a trout l face `8,`the' latter'presenting a-'stud-recleiving a aperture 'f'and holding inthe socket'. a ringlike a 'spring '9"' for engagement behind" the abrupt lshoulder onthe stud. .The spring,"

While preferably slightlyfelongatedli's suhstantlially` syminetlvil, lldlfesents @L Cl-w 1 a my 4invention illustrated, the socket vis adapt-- cular POTH "which 'engages behind three sides ofVnr the neck andishoulder of the stud- When' secured therewith and a.Y portion` here'- infv'shovvn' as 'jan 1 elliptical extension which does not-"engage then'eek ofrishoulder ot the ""if." Y i" e" i receivifngaprture Iso that 1t can engage only three sides of ,the stud;Without'ngaging thefouftn side; have-provided*afiijj'io ressedforwardly from the ldonell, wh-ich iorfbearingrfor theliead. ot the stu-d` when aperture?. his -li valso servesV as aguide To position the spring relative tothe stud? Application filed January .24, 1.924- Serialno. @88,208.

entering the socket and when the socket is l being tipped out of engagement therewith.'

The.V spring jaw member-has spaced apart ends t0 permit expansion and contractonxof; the spring, and between these ends I have Ploided, a Springflocating boss l2, which Pteterably :as .Shown .Struck .inwardly :fronrf' tlli-perlphely 0i' the Casing, and serving to l-ecate the circular part of the spring relatlv't@ th@ lip l0, While keeping .the open end-pf the spring in thefdesired position.

When the Socket is engaged with the stud,

it is lock-ed; therewith against separation -by a 'strain exerted thereon rat the three sides thereoi'at ,which the shoulder porti-on 3 overlied, to., a substantial extent, the spring `9..

Sparation of the fastener may vhefefectefil bya tipping movement ofthe socket relative to` the studrat'that side adjacent the 11p 1o.

This tipping action causes the head of ,thel

stndfto Wedge the spring javv ineinber apaigtf the stud. Duringth-is separating movement,

rivet 13 Whichis .supported in 'a cap r'neinfber 14C located upon the Vopposite side of the curtain'. Where,'as in the' preferred torlnot 1 ed for registration-when being attachedto tliejcurtain, the lrivet preferably is shaped fvinfcrossfsection to tit relatively closely an unsyrnnietrical aperture 15 having avvperiphery which will fit the 'rivet only Vin one pre#VVV determined Wayg'Allv ofthe parts ofthey solcketnay vhe .thus so arranged'V and shaped, as illustrated, that-'they can only register and'he engagedvvith one another in oneirela tive position, and they can thus be readily vlocated in the desiredlrelation to the Curtain.y vAny suitable indication on the outer aceof. the' cap Willthen indicate that sideofftl'i'fey curtain ivhich' should loe pulled to` ,effect Sep-antipatia@ studfandf seeks@ anteing the Y,side where" the "generally annular spring does not intersect the stud-receiving aperture in the socket casing, viz, the side adjacent the lip 10.

Thilo I have shown and described a preferred form of one embodiment of my invention, it will be understood that changes involving omission, substitution, alteration and reversal of parts, and even changes in the mode of operation, may be made Without departing from the scope of iny invention, which is best defined in the following claims.

Claims:

1; A snap fastener senting a head and an abrupt shoulder be* hindsiid head in (,:oinhiuation with a socket presenting a stud-receiviircr aperture and a generally` annular resilient stud-engaging spring intersecting said studreceiving aperture at three sides. for engagement with said abrupt shoulder at the three sides of the stud toprevent separation otsaid fastener by a pull at said three sides and means provided b v said casing for spacing said spring away from the stud-receiving aperture for a substantial distance at the `fourth side,

` thereby to preclude'engagement of the spring and shoulder at that side and permit separation of said fastener by a pull exerted at that side only. i

2, `A snap fastener comprisinfr, in combination, a stud and a socket having a casing containing a generally annular studengaging spring substantially symmetrically engaging three sides of said stud, to lock said stud and socket against separation at those sides and means holding said spring away from said stud at the fourth side to preclude enga gementof said spring with the stud at that side so that said fastener may be separated only `by a` tipping pull at that side where the spring is precluded from engage ment ivi th the stud. i

3. A snap `fastener coini'rising, in `combination, a .stud presenting a head and an abrupt shoulder behind said head, a socket inchuling a easing presenting a stud-receiving aperture, a spring positioned in said cas ing to engage three sides of said stud when entered in said socket to lock said stud and socket against separation at those sides, and,`

behind said head cooperating with a socket having a. casing presenting a stud-receiving aperture, a generally annular spring in said casing intersecting said aperture at three sides for engagement with said stud and a lip struck up from said casing to provide a Wall interposed between the spring andstudcomprising a stud pre` noname and spring-locating means between theaper ture and the fourth sident the spring acting upon said spring to more said U-shaped portion intolocking engagement with three sides of the neck of a` stud after the head of the stud has passed through and expanded said spring and to preclude engagement of y the spring u'ith the stud at the fourth side.

6. A socket for a snap fastener compris-- ing a casing, an aperture in the face ofsaid casing, a spring intersecting three sides said aperture, and a stud-engaging lip struck up from said casing adjacent the fourth-side of said aperture, said lip adapted to locate said spring in a predetermined position rela tive to said aperture and the lip to preclude a substantial portion of said spring from engagement witht-he shoulder at the fourth sit e. i

nation, a stud havingafhead anda neck, a socket including a casing, a spring in said easing, a spring-locating stud-engaging lug integral with said casing for locating said spring relative to said casing, and a dome in the back face of` said casing, `said neck 7. Asnap fastenercomprisingin combiadapted to engage three sides of said spring I to lock said stud and socket together,said` head. adapted to be guided into said dome, v

by the assistance of said lug, said lug also precluding engagement ot the spring with 1 the stud at that side adjacent the lug.

8. ifi socket for a snap fastener comprising a casing `presenting a stud-receiving aperture, a spring in said casing, one-half of said. spring substantially circulanwhile the other `half is substantially elliptical, and position-` ings means between `the aperture and the elliptical portion ot the spring to retain said.

springin a predetermined `general relation to said casing and preventl a largeiportion of the elliptical portion from engaging a 4cooperating stud.

9. A separable fastener comprising, 'in

combination. a stud having a relatively abrupt annular shoulder, a socket presenting a stud-receiving aperture, a `resilient` jaw member substantially symmetrical for locking engagement beneath said shoulder at three sides of said stud and an elliptical part to prevent engagement of a substantialpor#` tion of said jaw member beneath said shoulder at one side of said stud, saidfasteneri separable only by, a pull exerted at the elliptical side of said jaw member. f

l0. A socket for a snap fastener including a one-piece easing, a generally ring-like studengaging eXpansible and contractible spring located in a determined general relation to said casing, and a stud-receiving aperture eccentrically located relative to said casing thereby to be symmetrically intersected at three sides thereof by said spring and said spring and means formed integral With Asaid casing for holding the/ spring away from engagement With the stud at thefourth side.

l1. A socket for a snap fastener compris ing a casing, said casing presenting a pe ripheral Wall, a front face and a back face, a stud-reselling aperture throughisaid front face, an expansible and contractiblegenerally annular spring presenting a continuousr curv\ed portion intersecting three sides only of said aperture, said spring interposedV between said front face ,and said back face,

and spring-positioning means for spacingL said continuous Vcurved portion of said spring from said peripheral Wall to prevent substantial lateral shifting thereof when not engaged-With a stud. Y Y v n 12. A socket for a threefside lock fastener including a casing, a spring adapted to engage and lock with three sides of a stud, and

said curved portion of said spring, said lip adapted to contact With one side of said stud and provide a bearing surface against Which the head of the stud may slide during sepa# ration of thev stud from the socket.

14. A snap fastener comprising, in combination, a stud having a head, a neck and an abrupt shoulder between said head and 'saidnecln a one-piece socket casing presenting a stud-receiving aperture, a guiding Wall at one side of said aperture,`and a ringtype springr intersecting said aperture at three sides, said guiding Wall preventing one side of said shoulder from engaging over the Wall of said casing at one side of said aperture Vwhen said stud and socket are engaged.

In'testiinony whereof, I have signed my name to this specification.

GEORGE HENRYLWELL.

Patent No. 1,652,140.

Certificate of' Correction.

Granted December 6, 1927, to

GEORGE HENRY ELVELL.

It is hereby certified that error appears in the printed specification of the abovenuinbered patent requiring correction as follows: Page 3, lines 10 and l1, Claim 10, strike out the Words and said spring and insert the same to follow ,after the Word casing in line 8 of same claim; and that the said Letters Patent should be read With this correction therein that the saine may Conform to the record of the oase in the Patent Office.

Signed and sealed this 17th day of January, A. D. 1928.

[sEArL] M. J. MOORE,

Actng Commissioner of Patents. 

